PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/11-15:13:10
G01     90.5           31.7                8.2 +/-    1.02      13.9 +/-    1.02  0.030 / 0.020
G07     125.3          45.9               10.0 +/-    1.00      13.4 +/-    1.00  0.030 / 0.020
G11     68.6           39.7                7.5 +/-    1.08      10.9 +/-    1.08  0.030 / 0.030
G13     294.8          36.0               10.7 +/-    2.16      16.7 +/-    2.16  0.040 / 0.040
G17     214.3          52.9               11.5 +/-    0.96      14.1 +/-    0.96  0.100 / 0.110
G18     63.9           23.8                7.7 +/-    1.66      15.5 +/-    1.66  0.070 / 0.110
G19     214.7          24.2               11.6 +/-    2.43      23.1 +/-    2.43  0.070 / 0.130
G28     348.4          61.8                8.9 +/-    0.53      10.0 +/-    0.53  0.060 / 0.140
G30     101.5          77.0                9.8 +/-    0.22      10.0 +/-    0.22  0.070 / 0.100