PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/31-16:58:00
G01     92.3           30.7               10.9 +/-    0.59      18.9 +/-    0.59  0.050 / 0.060
G07     124.1          42.1               10.9 +/-    1.15      15.3 +/-    1.15  0.070 / 0.070
G11     70.4           40.9                9.8 +/-    0.67      14.1 +/-    0.67  0.030 / 0.070
G13     296.7          36.1               11.1 +/-    1.12      17.3 +/-    1.12  0.040 / 0.080
G17     211.9          50.1               14.2 +/-    1.09      17.9 +/-    1.09  0.070 / 0.130
G18     64.8           23.7                9.1 +/-    0.54      18.2 +/-    0.54  0.070 / 0.130
G19     212.7          25.6               12.5 +/-    4.93      24.2 +/-    4.93  0.050 / 0.080
G28     332.7          61.3                9.9 +/-    1.41      11.1 +/-    1.41  0.040 / 0.100
G30     102.6          74.7               12.1 +/-    0.55      12.5 +/-    0.55  0.080 / 0.200