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               13.2 +/-    2.64      19.3 +/-    2.64  0.100 / 0.070
G03     316.4          34.4                9.8 +/-    1.70      15.7 +/-    1.70  0.070 / 0.060
G10     132.8          13.1               13.4 +/-    1.01      34.9 +/-    1.01  0.060 / 0.230
G11     246.2          18.1               11.6 +/-    1.31      26.9 +/-    1.31  0.140 / 0.270
G14     49.7           46.7                8.6 +/-    0.64      11.4 +/-    0.64  0.030 / 0.030
G22     312.6          56.2                9.5 +/-    1.72      11.2 +/-    1.72  0.030 / 0.020
G25     47.4           14.8                5.9 +/-    5.40      14.7 +/-    5.40  0.040 / 0.070
G26     146.1          28.8               13.6 +/-    1.59      24.4 +/-    1.59  0.050 / 0.060
G31     46.9           70.7               10.7 +/-    0.40      11.3 +/-    0.40  0.070 / 0.100
G32     68.5           29.8                8.1 +/-    2.64      14.3 +/-    2.64  0.080 / 0.080