PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/15-08:28:10
G01     62.6           30.6                2.9 +/-    1.00       5.0 +/-    1.00  0.030 / 0.040
G06     179.8          11.9                1.6 +/-   22.33       4.3 +/-   22.33  0.030 / 0.040
G07     140.0          25.0                5.9 +/-    1.73      11.6 +/-    1.73  0.050 / 0.120
G11     50.8           29.2                2.8 +/-    1.47       5.1 +/-    1.47  0.050 / 0.110
G13     265.8          37.5                8.0 +/-    1.33      12.2 +/-    1.33  0.080 / 0.150
G15     296.6          16.3                4.1 +/-    1.88       9.8 +/-    1.88  0.090 / 0.170
G17     242.7          72.9                7.2 +/-    0.86       7.4 +/-    0.86  0.060 / 0.110
G19     227.9          49.4                9.3 +/-    1.50      11.8 +/-    1.50  0.050 / 0.110
G28     14.4           60.7                3.3 +/-    0.55       3.7 +/-    0.55  0.040 / 0.050
G30     141.5          59.1                7.0 +/-    0.54       8.0 +/-    0.54  0.040 / 0.050