PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/17-21:12:50
G01     272.7          41.1               11.8 +/-    1.15      16.9 +/-    1.15  0.060 / 0.050
G03     315.5          28.3               11.5 +/-    1.21      20.9 +/-    1.21  0.060 / 0.050
G10     128.9          18.7               14.1 +/-    1.40      32.0 +/-    1.40  0.050 / 0.090
G11     252.4          21.3               14.1 +/-    2.17      30.0 +/-    2.17  0.050 / 0.090
G14     41.9           50.8                8.3 +/-    0.38      10.4 +/-    0.38  0.030 / 0.030
G22     314.3          49.8               10.2 +/-    1.00      12.8 +/-    1.00  0.030 / 0.030
G25     53.4           17.1                7.8 +/-    0.86      18.4 +/-    0.86  0.070 / 0.190
G26     150.4          23.1               13.4 +/-    1.37      27.5 +/-    1.37  0.080 / 0.180
G31     61.4           77.1               11.1 +/-    0.71      11.3 +/-    0.71  0.040 / 0.070
G32     62.5           34.1                9.0 +/-    0.38      14.5 +/-    0.38  0.040 / 0.060