PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/12-17:58:00
G01     250.8          35.0               13.3 +/-    1.51      21.1 +/-    1.51  0.040 / 0.040
G03     315.7          47.0               10.8 +/-    0.88      14.2 +/-    0.88  0.040 / 0.040
G11     239.4          12.6               11.6 +/-    0.98      30.6 +/-    0.98  0.120 / 0.220
G14     59.7           41.7                8.8 +/-    0.67      12.4 +/-    0.67  0.070 / 0.280
G22     303.2          67.8               11.4 +/-    0.69      12.2 +/-    0.69  0.030 / 0.040
G23     287.5          20.6               10.6 +/-    1.67      23.0 +/-    1.67  0.030 / 0.040
G25     39.9           10.4                7.5 +/-    3.17      20.8 +/-    3.17  0.050 / 0.070
G26     135.5          38.5               12.6 +/-    0.76      18.9 +/-    0.76  0.050 / 0.080
G31     40.8           57.5                8.9 +/-    0.43      10.4 +/-    0.43  0.050 / 0.040
G32     78.1           22.1                9.2 +/-    1.54      19.2 +/-    1.54  0.040 / 0.050