PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/08-18:12:30
G02     203.4          32.2               12.7 +/-    1.08      21.4 +/-    1.08  0.150 / 0.300
G06     157.1          69.0               11.7 +/-    0.46      12.4 +/-    0.46  0.240 / 0.200
G12     307.8          16.9                9.2 +/-    2.98      21.8 +/-    2.98  0.050 / 0.120
G17     34.3           50.6                9.9 +/-    1.02      12.4 +/-    1.02  0.100 / 0.070
G19     351.4          66.9               10.2 +/-    0.27      11.0 +/-    0.27  0.030 / 0.030
G24     298.3          38.3               10.3 +/-    1.98      15.4 +/-    1.98  0.030 / 0.030
G28     101.3          32.0               10.3 +/-    0.95      17.3 +/-    0.95  0.050 / 0.040