PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/18-21:57:50
G01     223.4          14.5                7.7 +/-    1.88      19.4 +/-    1.88  0.250 / 0.510
G03     277.2          69.4                9.8 +/-    1.21      10.4 +/-    1.21  0.220 / 0.480
G09     296.8          11.7               10.9 +/-    8.61      29.4 +/-    8.61  0.040 / 0.050
G14     90.0           21.2                8.3 +/-    1.24      17.8 +/-    1.24  0.050 / 0.050
G16     144.4          48.0               10.9 +/-    0.96      14.1 +/-    0.96  0.060 / 0.070
G22     209.9          67.4               12.0 +/-    0.73      12.9 +/-    0.73  0.060 / 0.080
G23     308.9          38.2                9.0 +/-    1.46      13.5 +/-    1.46  0.130 / 0.280
G26     94.6           55.5               10.0 +/-    0.88      11.9 +/-    0.88  0.130 / 0.240
G31     45.7           32.7                7.5 +/-    1.01      12.4 +/-    1.01  0.040 / 0.030