PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/15-07:57:50
G01     79.5           32.2                3.8 +/-    1.17       6.3 +/-    1.17  0.030 / 0.030
G07     131.2          38.1                5.6 +/-    0.54       8.4 +/-    0.54  0.030 / 0.030
G11     62.1           38.8                4.0 +/-    1.14       6.0 +/-    1.14  0.100 / 0.090
G13     284.6          38.8               -1.4 +/-    2.80      -2.1 +/-    2.80  0.100 / 0.130
G15     309.3          13.2                2.8 +/-    2.22       7.2 +/-    2.22  0.110 / 0.250
G17     219.4          59.7                5.8 +/-    1.28       6.6 +/-    1.28  0.170 / 0.240
G19     217.1          36.0                5.8 +/-    1.43       9.0 +/-    1.43  0.040 / 0.050
G28     346.3          61.5                2.0 +/-    0.72       2.3 +/-    0.72  0.040 / 0.050
G30     121.8          73.1                4.5 +/-    0.80       4.7 +/-    0.80  0.040 / 0.070