PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/11-04:57:40
G01     113.3          21.9                5.7 +/-    2.37      12.1 +/-    2.37  0.040 / 0.040
G07     95.6           62.3                3.9 +/-    0.60       4.4 +/-    0.60  0.040 / 0.050
G08     42.9           25.6                2.1 +/-    2.13       4.1 +/-    2.13  0.110 / 0.100
G09     176.3          20.1                7.1 +/-    3.39      15.6 +/-    3.39  0.090 / 0.110
G11     98.9           41.4                4.3 +/-    0.76       6.1 +/-    0.76  0.060 / 0.140
G13     315.0          23.0                3.0 +/-    1.14       6.2 +/-    1.14  0.070 / 0.080
G17     203.3          32.2                7.5 +/-    1.11      12.5 +/-    1.11  0.080 / 0.150
G28     306.3          59.8                3.7 +/-    0.78       4.2 +/-    0.78  0.090 / 0.120
G30     6.1            74.3                4.6 +/-    0.76       4.7 +/-    0.76  0.030 / 0.030