PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/14-19:58:10
G01     314.8          25.5                8.4 +/-    2.50      16.3 +/-    2.50  0.260 / 0.250
G10     92.9           48.1                9.0 +/-    0.70      11.6 +/-    0.70  0.230 / 0.260
G11     294.5          26.4                8.6 +/-    4.50      16.3 +/-    4.50  0.040 / 0.040
G14     328.1          70.6                8.3 +/-    0.53       8.8 +/-    0.53  0.050 / 0.040
G18     110.0          20.9                9.2 +/-    1.05      19.7 +/-    1.05  0.030 / 0.030
G22     305.0          16.8                8.1 +/-    1.56      19.3 +/-    1.56  0.040 / 0.020
G25     92.4           12.7               11.1 +/-    2.10      29.1 +/-    2.10  0.040 / 0.040
G31     175.4          51.2               11.3 +/-    0.87      14.1 +/-    0.87  0.040 / 0.040
G32     21.4           61.2                8.1 +/-    0.65       9.1 +/-    0.65  0.190 / 0.220