PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/19-00:57:40
G01     285.4          41.0                7.2 +/-    1.54      10.3 +/-    1.54  0.070 / 0.110
G03     313.0          18.7                7.8 +/-    1.43      17.7 +/-    1.43  0.070 / 0.090
G10     122.7          26.4                8.9 +/-    0.89      16.9 +/-    0.89  0.030 / 0.030
G11     259.8          25.4               10.3 +/-    1.43      20.0 +/-    1.43  0.030 / 0.030
G14     31.6           55.6                5.3 +/-    1.07       6.3 +/-    1.07  0.060 / 0.150
G22     314.1          40.9                6.8 +/-    1.89       9.7 +/-    1.89  0.050 / 0.140
G25     61.0           18.0                5.3 +/-    0.99      12.2 +/-    0.99  0.040 / 0.100
G26     158.4          14.1                9.7 +/-    1.29      24.8 +/-    1.29  0.060 / 0.080
G31     132.2          81.0                7.7 +/-    1.09       7.8 +/-    1.09  0.040 / 0.050
G32     52.5           41.8                5.7 +/-    0.71       8.1 +/-    0.71  0.040 / 0.060