PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/14-19:58:10
G02     78.8           17.7               19.4 +/-    2.11      45.2 +/-    2.11  0.030 / 0.030
G05     44.6           42.8               22.1 +/-    0.95      30.7 +/-    0.95  0.040 / 0.030
G13     107.9          30.8               27.7 +/-    1.04      47.8 +/-    1.04  0.140 / 0.120
G15     149.7          32.4               31.4 +/-    1.81      52.4 +/-    1.81  0.100 / 0.140
G18     227.7          22.1               32.5 +/-    3.16      67.9 +/-    3.16  0.090 / 0.290
G20     275.9          85.7               24.1 +/-    0.42      24.2 +/-    0.42  0.070 / 0.390
G21     292.0          33.1               22.2 +/-    1.23      36.5 +/-    1.23  0.070 / 0.060
G25     209.6          29.4               30.1 +/-    1.54      53.4 +/-    1.54  0.060 / 0.040
G26     313.5          14.2               -2.6 +/-   47.64      -6.5 +/-   47.64  0.030 / 0.020
G29     9.9            82.9               24.9 +/-    0.33      25.1 +/-    0.33  0.030 / 0.020