PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/29-22:27:50
G03     250.3          69.7               10.3 +/-    0.41      10.9 +/-    0.41  0.050 / 0.060
G09     300.7          14.4                8.5 +/-    2.00      21.5 +/-    2.00  0.040 / 0.080
G14     96.4           17.2                8.2 +/-    1.64      19.4 +/-    1.64  0.050 / 0.040
G16     139.3          54.8               11.5 +/-    0.59      13.7 +/-    0.59  0.050 / 0.030
G22     199.2          60.4               10.7 +/-    0.40      12.1 +/-    0.40  0.110 / 0.200
G23     315.7          45.3                8.6 +/-    0.73      11.6 +/-    0.73  0.070 / 0.220
G26     78.1           54.3                8.6 +/-    0.70      10.3 +/-    0.70  0.030 / 0.040
G31     49.6           24.1                6.8 +/-    2.38      13.5 +/-    2.38  0.030 / 0.040