PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/20-17:57:50
G01     114.1          21.5               12.6 +/-    0.53      26.8 +/-    0.53  0.030 / 0.040
G07     93.3           63.7               11.3 +/-    0.70      12.5 +/-    0.70  0.030 / 0.040
G08     43.6           28.6                8.1 +/-    0.90      14.7 +/-    0.90  0.050 / 0.080
G09     176.2          20.4               12.4 +/-    2.01      27.1 +/-    2.01  0.060 / 0.090
G11     100.3          41.9               13.0 +/-    0.37      18.3 +/-    0.37  0.030 / 0.030
G13     314.7          23.6               10.6 +/-    2.27      21.3 +/-    2.27  0.030 / 0.030
G17     204.1          27.7               13.5 +/-    0.70      24.8 +/-    0.70  0.050 / 0.050
G18     88.6           22.8                9.9 +/-    1.20      20.3 +/-    1.20  0.060 / 0.050
G28     303.9          59.4               12.0 +/-    0.98      13.7 +/-    0.98  0.050 / 0.090
G30     1.2            73.7               11.7 +/-    0.59      12.2 +/-    0.59  0.040 / 0.090