PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/16-11:12:50
G01     44.4           20.4                3.3 +/-    2.84       7.2 +/-    2.84  0.210 / 0.330
G06     175.1          31.7                6.1 +/-    1.48      10.2 +/-    1.48  0.200 / 0.480
G11     43.8           11.6                2.1 +/-    3.29       5.8 +/-    3.29  0.040 / 0.030
G13     242.9          27.5                5.9 +/-    1.51      10.8 +/-    1.51  0.040 / 0.020
G15     278.3          14.2                2.8 +/-    1.40       7.2 +/-    1.40  0.040 / 0.040
G17     331.6          76.7                7.1 +/-    0.60       7.2 +/-    0.60  0.040 / 0.040
G19     259.3          66.6                6.1 +/-    1.00       6.6 +/-    1.00  0.070 / 0.310
G24     318.5          11.8               -3.3 +/-   24.75      -8.9 +/-   24.75  0.130 / 0.280
G28     52.1           55.1                3.7 +/-    0.54       4.4 +/-    0.54  0.070 / 0.070
G30     152.8          36.7                5.1 +/-    1.07       7.9 +/-    1.07  0.050 / 0.070