PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/08-13:57:40
G01     68.9           32.7                9.1 +/-    1.00      15.1 +/-    1.00  0.030 / 0.040
G07     138.3          29.5                8.5 +/-    1.01      15.0 +/-    1.01  0.030 / 0.040
G11     52.0           28.7                7.3 +/-    0.57      13.1 +/-    0.57  0.050 / 0.070
G13     272.1          37.5                7.9 +/-    0.86      11.9 +/-    0.86  0.050 / 0.080
G15     304.0          13.9                6.0 +/-    1.84      15.4 +/-    1.84  0.060 / 0.170
G17     237.1          71.5                9.8 +/-    0.75      10.2 +/-    0.75  0.060 / 0.140
G18     47.4           17.0                6.2 +/-    0.81      14.6 +/-    0.81  0.080 / 0.120
G19     225.1          40.0                8.2 +/-    2.38      11.9 +/-    2.38  0.060 / 0.120
G28     21.9           59.0                8.5 +/-    0.35       9.7 +/-    0.35  0.030 / 0.050
G30     137.3          61.8               11.3 +/-    0.27      12.6 +/-    0.27  0.040 / 0.060