PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/11-08:58:10
G01     89.5           31.9                5.9 +/-    0.88       9.9 +/-    0.88  0.020 / 0.020
G07     126.2          43.9                8.7 +/-    0.63      11.9 +/-    0.63  0.020 / 0.020
G11     66.4           38.7                6.1 +/-    0.99       9.0 +/-    0.99  0.050 / 0.040
G13     293.6          36.5                8.0 +/-    2.80      12.3 +/-    2.80  0.050 / 0.040
G17     214.3          56.4                8.6 +/-    0.77      10.1 +/-    0.77  0.080 / 0.100
G18     61.4           22.9                4.1 +/-    1.66       8.4 +/-    1.66  0.080 / 0.090
G19     215.1          23.9                9.3 +/-    2.36      18.7 +/-    2.36  0.060 / 0.170
G28     347.6          61.8                5.5 +/-    0.70       6.1 +/-    0.70  0.110 / 0.140
G30     102.7          77.4                6.4 +/-    0.39       6.6 +/-    0.39  0.160 / 0.260