PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/11-06:43:00
G10     259.2          34.2                6.9 +/-    2.21      11.2 +/-    2.21  0.140 / 0.400
G13     45.9           23.2                5.0 +/-    2.29      10.1 +/-    2.29  0.170 / 0.340
G15     67.8           52.9                7.2 +/-    1.47       8.7 +/-    1.47  0.040 / 0.040
G16     290.9          13.4                3.6 +/-    2.09       9.3 +/-    2.09  0.030 / 0.040
G20     284.3          56.6                6.6 +/-    2.03       7.7 +/-    2.03  0.070 / 0.090
G21     352.6          67.9                5.4 +/-    0.51       5.8 +/-    0.51  0.100 / 0.080
G24     125.7          9.9               -11.9 +/-   24.00     -33.4 +/-   24.00  0.090 / 0.250
G26     262.8          11.4                3.0 +/-   17.70       8.1 +/-   17.70  0.080 / 0.190
G27     322.0          11.1               -8.1 +/-   25.24     -22.2 +/-   25.24  0.300 / 0.260
G29     163.8          35.0                9.2 +/-    0.88      14.6 +/-    0.88  0.500 / 0.460