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                2.1 +/-    1.13       4.7 +/-    1.13  0.040 / 0.070
G06     175.1          31.7                6.7 +/-    0.72      11.4 +/-    0.72  0.030 / 0.060
G11     43.8           11.6                1.7 +/-    1.70       4.7 +/-    1.70  0.080 / 0.120
G13     242.9          27.5                5.3 +/-    2.36       9.7 +/-    2.36  0.070 / 0.120
G15     278.3          14.2                3.2 +/-    1.65       8.2 +/-    1.65  0.030 / 0.040
G17     331.6          76.7                5.9 +/-    0.89       6.0 +/-    0.89  0.030 / 0.030
G19     259.3          66.6                4.0 +/-    1.08       4.4 +/-    1.08  0.090 / 0.200
G24     318.5          11.8               -1.5 +/-   13.93      -3.9 +/-   13.93  0.090 / 0.200
G28     52.1           55.1                2.9 +/-    0.54       3.4 +/-    0.54  0.040 / 0.040
G30     152.8          36.7                6.2 +/-    0.93       9.5 +/-    0.93  0.040 / 0.040