PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/15-14:42:50
G01     98.3           29.4               12.4 +/-    0.57      22.0 +/-    0.57  0.050 / 0.030
G07     118.2          51.7               13.7 +/-    0.66      16.9 +/-    0.66  0.030 / 0.030
G08     41.8           12.9                8.0 +/-    2.24      20.9 +/-    2.24  0.060 / 0.120
G11     76.9           41.8               13.7 +/-    0.74      19.3 +/-    0.74  0.060 / 0.120
G13     302.1          33.4               12.9 +/-    1.31      21.1 +/-    1.31  0.040 / 0.090
G17     209.9          46.2               15.2 +/-    0.64      20.1 +/-    0.64  0.040 / 0.080
G18     71.0           24.6               11.7 +/-    0.66      23.0 +/-    0.66  0.030 / 0.050
G19     212.0          18.0               10.6 +/-    1.08      24.4 +/-    1.08  0.030 / 0.050
G28     334.6          61.8               12.2 +/-    0.66      13.7 +/-    0.66  0.040 / 0.060
G30     66.4           80.0               12.9 +/-    0.56      13.1 +/-    0.56  0.050 / 0.060