PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/18-10:12:50
G01     66.2           31.5                3.2 +/-    1.17       5.4 +/-    1.17  0.070 / 0.120
G07     138.4          27.0                5.3 +/-    0.64       9.9 +/-    0.64  0.070 / 0.130
G11     52.3           30.8                3.4 +/-    1.01       5.9 +/-    1.01  0.030 / 0.030
G13     269.8          38.2                5.4 +/-    3.14       8.2 +/-    3.14  0.030 / 0.040
G15     300.7          15.4                2.8 +/-    1.49       6.9 +/-    1.49  0.110 / 0.110
G17     235.1          69.1                6.4 +/-    0.45       6.8 +/-    0.45  0.100 / 0.130
G18     46.3           16.6                3.7 +/-    2.14       8.9 +/-    2.14  0.080 / 0.250
G19     225.2          46.4                6.3 +/-    2.29       8.3 +/-    2.29  0.090 / 0.230
G28     9.7            61.0                3.8 +/-    1.12       4.3 +/-    1.12  0.040 / 0.040
G30     138.6          61.1                6.0 +/-    0.36       6.7 +/-    0.36  0.030 / 0.030