PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/06-15:27:50
G01     94.0           30.9               10.4 +/-    0.53      18.0 +/-    0.53  0.030 / 0.030
G07     122.3          48.5                9.9 +/-    0.61      12.7 +/-    0.61  0.030 / 0.040
G08     42.1           10.2                9.8 +/-    2.63      27.3 +/-    2.63  0.080 / 0.110
G11     72.3           40.8                8.8 +/-    0.63      12.6 +/-    0.63  0.080 / 0.090
G13     298.1          35.0                9.9 +/-    0.80      15.7 +/-    0.80  0.040 / 0.040
G17     212.3          49.6               14.9 +/-    0.72      18.9 +/-    0.72  0.040 / 0.060
G18     67.0           24.3                8.7 +/-    0.72      17.2 +/-    0.72  0.030 / 0.060
G19     213.5          21.6               12.9 +/-    1.11      27.4 +/-    1.11  0.040 / 0.050
G28     342.4          61.9                8.7 +/-    0.54       9.8 +/-    0.54  0.050 / 0.070
G30     88.8           78.6                9.5 +/-    0.66       9.6 +/-    0.66  0.040 / 0.090