PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/16-20:12:30
G03     199.3          44.2               12.5 +/-    0.47      17.0 +/-    0.47  0.100 / 0.120
G07     266.7          22.3               12.2 +/-    2.22      25.3 +/-    2.22  0.080 / 0.130
G09     315.4          37.3               11.4 +/-    0.96      17.4 +/-    0.96  0.060 / 0.040
G16     67.1           61.5               13.8 +/-    0.77      15.4 +/-    0.77  0.040 / 0.030
G22     183.7          28.6               13.4 +/-    1.74      24.2 +/-    1.74  0.080 / 0.180
G23     346.9          71.7               12.6 +/-    0.36      13.2 +/-    0.36  0.090 / 0.160
G26     46.0           33.0                9.9 +/-    1.54      16.3 +/-    1.54  0.030 / 0.040
G27     123.9          19.1               15.2 +/-    1.23      34.2 +/-    1.23  0.040 / 0.040