PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/26-05:12:40
G01     319.5          16.1                3.7 +/-    1.51       9.1 +/-    1.51  0.030 / 0.020
G08     257.9          14.4                8.9 +/-    2.11      22.6 +/-    2.11  0.030 / 0.010
G10     74.5           55.5                3.6 +/-    0.50       4.2 +/-    0.50  0.200 / 0.130
G11     303.3          24.1                5.4 +/-    2.42      10.7 +/-    2.42  0.170 / 0.110
G14     294.0          71.0                5.9 +/-    0.64       6.2 +/-    0.64  0.060 / 0.050
G18     98.6           32.5                5.7 +/-    0.77       9.4 +/-    0.77  0.050 / 0.060
G27     224.4          9.9                10.4 +/-    2.26      29.0 +/-    2.26  0.110 / 0.220
G31     176.5          39.3               10.5 +/-    0.86      15.5 +/-    0.86  0.080 / 0.210
G32     359.9          69.6                3.1 +/-    0.78       3.3 +/-    0.78  0.050 / 0.030