PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/17-21:27:50
G01     263.5          39.6               13.1 +/-    1.25      19.2 +/-    1.25  0.050 / 0.050
G03     316.4          34.4                9.0 +/-    1.59      14.5 +/-    1.59  0.040 / 0.050
G10     132.8          13.1               14.7 +/-    0.89      38.3 +/-    0.89  0.060 / 0.080
G11     246.2          18.1               12.5 +/-    2.14      28.9 +/-    2.14  0.070 / 0.070
G14     49.7           46.7                8.0 +/-    1.05      10.5 +/-    1.05  0.040 / 0.040
G22     312.6          56.2               10.3 +/-    1.36      12.1 +/-    1.36  0.030 / 0.040
G25     47.4           14.8                5.8 +/-    0.98      14.4 +/-    0.98  0.080 / 0.230
G26     146.1          28.8               14.5 +/-    1.63      26.1 +/-    1.63  0.090 / 0.240
G31     46.9           70.7               11.5 +/-    0.42      12.1 +/-    0.42  0.040 / 0.080
G32     68.5           29.8                8.8 +/-    0.84      15.5 +/-    0.84  0.050 / 0.080