PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/15-11:28:40
G01     41.2           16.7                3.2 +/-    1.97       7.6 +/-    1.97  0.040 / 0.070
G06     173.8          37.3                6.8 +/-    1.76      10.3 +/-    1.76  0.040 / 0.070
G13     238.0          24.0                2.0 +/-    2.64       4.0 +/-    2.64  0.160 / 0.350
G15     273.4          12.7                3.7 +/-    0.88       9.7 +/-    0.88  0.150 / 0.260
G17     349.9          73.5                5.5 +/-    0.68       5.7 +/-    0.68  0.030 / 0.020
G19     273.7          69.8                4.5 +/-    0.88       4.8 +/-    0.88  0.020 / 0.030
G24     317.3          16.2                3.7 +/-    3.53       8.9 +/-    3.53  0.090 / 0.330
G28     60.5           53.0                4.5 +/-    2.08       5.5 +/-    2.08  0.080 / 0.310
G30     154.5          31.2                6.4 +/-    1.50      10.9 +/-    1.50  0.040 / 0.040