PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/19-10:58:00
G01     45.2           21.2                3.8 +/-    2.75       8.1 +/-    2.75  0.120 / 0.230
G06     175.3          30.4                6.5 +/-    1.51      11.3 +/-    1.51  0.380 / 0.310
G11     44.0           12.7                2.6 +/-    2.12       6.8 +/-    2.12  0.040 / 0.030
G13     244.1          28.3                9.0 +/-    2.65      16.3 +/-    2.65  0.040 / 0.020
G15     279.3          14.5                5.3 +/-    0.95      13.3 +/-    0.95  0.050 / 0.030
G17     327.0          77.3                7.2 +/-    0.74       7.4 +/-    0.74  0.030 / 0.030
G19     256.5          65.8                8.7 +/-    0.47       9.5 +/-    0.47  0.090 / 0.110
G24     318.7          10.8              -12.8 +/-   21.89     -35.1 +/-   21.89  0.070 / 0.090
G28     50.0           55.6                5.8 +/-    0.86       6.8 +/-    0.86  0.060 / 0.070
G30     152.4          38.0                7.2 +/-    0.79      10.8 +/-    0.79  0.050 / 0.070