PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/15-13:42:40
G01     61.8           31.1                7.0 +/-    1.28      12.0 +/-    1.28  0.040 / 0.040
G07     141.5          23.6                7.0 +/-    1.27      14.2 +/-    1.27  0.040 / 0.040
G11     48.5           23.9                5.9 +/-    1.04      11.9 +/-    1.04  0.060 / 0.190
G13     264.1          35.9                6.7 +/-    0.87      10.5 +/-    0.87  0.060 / 0.200
G15     298.6          14.8                1.3 +/-    1.95       3.4 +/-    1.95  0.050 / 0.100
G17     256.2          76.7                7.2 +/-    0.58       7.4 +/-    0.58  0.060 / 0.080
G18     43.0           13.4                4.6 +/-    1.28      11.8 +/-    1.28  0.080 / 0.150
G19     230.3          45.6                8.6 +/-    1.79      11.4 +/-    1.79  0.080 / 0.130
G28     32.7           57.3                6.4 +/-    0.37       7.5 +/-    0.37  0.090 / 0.190
G30     142.9          55.6                7.9 +/-    0.74       9.3 +/-    0.74  0.080 / 0.200