PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/12-07:43:00
G10     261.4          34.4                6.6 +/-    1.58      10.6 +/-    1.58  0.130 / 0.380
G13     45.0           22.7                3.3 +/-    2.50       6.8 +/-    2.50  0.170 / 0.330
G15     64.9           51.7                4.5 +/-    1.29       5.5 +/-    1.29  0.120 / 0.210
G16     284.0          13.5                3.7 +/-    1.49       9.4 +/-    1.49  0.140 / 0.250
G20     24.9           61.9                4.7 +/-    0.84       5.2 +/-    0.84  0.240 / 0.390
G21     352.1          68.6                5.2 +/-    0.61       5.5 +/-    0.61  0.240 / 0.300
G24     124.9          11.0                4.0 +/-    5.60      10.8 +/-    5.60  0.040 / 0.040
G27     320.5          15.2                1.6 +/-    1.92       4.0 +/-    1.92  0.040 / 0.040
G29     167.3          36.8                6.0 +/-    0.78       9.2 +/-    0.78  0.040 / 0.050