PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/02-16:43:10
G01     61.3           31.0                9.1 +/-    1.01      15.6 +/-    1.01  0.080 / 0.140
G07     141.8          23.5               10.9 +/-    0.99      22.1 +/-    0.99  0.070 / 0.130
G11     48.7           24.4                9.8 +/-    2.05      19.5 +/-    2.05  0.040 / 0.040
G13     263.8          35.7               13.1 +/-    1.78      20.6 +/-    1.78  0.030 / 0.040
G15     296.8          15.5                7.9 +/-    1.52      19.4 +/-    1.52  0.100 / 0.120
G17     253.6          74.9               12.5 +/-    0.47      12.9 +/-    0.47  0.100 / 0.120
G18     43.0           13.5                8.1 +/-    2.47      21.0 +/-    2.47  0.040 / 0.030
G19     231.1          47.1               12.8 +/-    2.28      16.8 +/-    2.28  0.030 / 0.030
G28     33.9           57.1               12.6 +/-    1.21      14.7 +/-    1.21  0.090 / 0.090
G30     143.0          53.9               12.4 +/-    0.74      14.9 +/-    0.74  0.090 / 0.100