PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/17-08:43:10
G01     84.2           32.8                6.7 +/-    1.17      11.1 +/-    1.17  0.030 / 0.030
G07     129.9          39.9                6.9 +/-    0.47      10.0 +/-    0.47  0.030 / 0.030
G11     61.7           36.5                4.2 +/-    0.54       6.5 +/-    0.54  0.040 / 0.080
G13     288.2          37.6                4.1 +/-    0.72       6.2 +/-    0.72  0.040 / 0.070
G17     218.3          61.0                7.6 +/-    0.69       8.6 +/-    0.69  0.090 / 0.100
G18     57.0           21.5                1.6 +/-    1.72       3.5 +/-    1.72  0.080 / 0.100
G19     217.2          28.1                5.9 +/-    2.70      10.8 +/-    2.70  0.070 / 0.130
G28     356.2          61.5                5.3 +/-    0.99       5.9 +/-    0.99  0.090 / 0.120
G30     116.9          74.0                7.0 +/-    1.56       7.2 +/-    1.56  0.070 / 0.120