PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/13-17:58:00
G01     248.7          34.0               11.5 +/-    1.34      18.5 +/-    1.34  0.040 / 0.050
G03     315.2          48.9                8.6 +/-    0.93      10.9 +/-    0.93  0.040 / 0.040
G11     237.9          11.6               11.1 +/-    9.81      30.0 +/-    9.81  0.030 / 0.040
G14     61.6           40.6                8.0 +/-    1.28      11.5 +/-    1.28  0.030 / 0.040
G16     162.6          20.0               -5.1 +/-   13.81     -11.3 +/-   13.81  0.120 / 0.300
G22     300.2          69.4                9.6 +/-    0.64      10.2 +/-    0.64  0.040 / 0.090
G23     288.9          21.7               10.2 +/-    2.15      21.6 +/-    2.15  0.060 / 0.090
G26     133.7          40.0               11.3 +/-    0.89      16.5 +/-    0.89  0.170 / 0.300
G31     40.6           55.6                8.1 +/-    0.52       9.6 +/-    0.52  0.090 / 0.210
G32     79.6           20.9                8.8 +/-    0.81      18.8 +/-    0.81  0.110 / 0.100