PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/13-20:57:40
G01     292.1          39.8               14.6 +/-    4.95      21.3 +/-    4.95  0.050 / 0.080
G03     311.6          16.1                8.7 +/-    1.64      21.1 +/-    1.64  0.070 / 0.080
G10     118.9          30.1                9.8 +/-    1.33      17.1 +/-    1.33  0.070 / 0.160
G11     266.9          26.5                9.8 +/-    1.38      18.5 +/-    1.38  0.070 / 0.140
G14     23.0           59.2                8.5 +/-    0.79       9.7 +/-    0.79  0.020 / 0.020
G22     313.4          36.9                9.3 +/-    1.20      14.3 +/-    1.20  0.020 / 0.020
G25     67.5           18.8                8.1 +/-    1.38      18.3 +/-    1.38  0.040 / 0.050
G26     158.7          11.6               11.9 +/-    6.07      32.1 +/-    6.07  0.040 / 0.040
G31     144.5          78.0               10.2 +/-    0.57      10.4 +/-    0.57  0.060 / 0.110
G32     49.3           43.5                7.7 +/-    1.63      10.5 +/-    1.63  0.050 / 0.090