PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/15-14:43:00
G01     98.3           29.4               13.8 +/-    1.07      24.5 +/-    1.07  0.030 / 0.020
G07     118.2          51.7               12.6 +/-    0.55      15.6 +/-    0.55  0.040 / 0.020
G08     41.8           12.9                9.6 +/-    3.47      25.1 +/-    3.47  0.030 / 0.040
G11     76.9           41.8               11.7 +/-    1.37      16.6 +/-    1.37  0.030 / 0.030
G13     302.1          33.4                9.4 +/-    2.24      15.3 +/-    2.24  0.050 / 0.130
G17     209.9          46.2               13.4 +/-    0.61      17.8 +/-    0.61  0.050 / 0.130
G18     71.0           24.6               12.5 +/-    1.67      24.6 +/-    1.67  0.130 / 0.140
G19     212.0          18.0               11.7 +/-    1.25      26.9 +/-    1.25  0.190 / 0.170
G28     334.6          61.8               11.7 +/-    0.47      13.1 +/-    0.47  0.110 / 0.110
G30     66.4           80.0               12.7 +/-    0.41      12.9 +/-    0.41  0.070 / 0.090