PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/28-18:58:10
G03     206.5          55.3               13.9 +/-    0.46      16.6 +/-    0.46  0.050 / 0.080
G07     257.6          15.4               13.6 +/-    2.52      33.6 +/-    2.52  0.050 / 0.080
G09     310.5          27.8               11.1 +/-    0.74      20.4 +/-    0.74  0.220 / 0.440
G16     93.9           64.8               15.4 +/-    0.80      16.8 +/-    0.80  0.190 / 0.270
G22     186.5          39.5               14.4 +/-    0.80      21.1 +/-    0.80  0.040 / 0.030
G23     333.3          62.2               13.3 +/-    0.63      14.8 +/-    0.63  0.050 / 0.030
G26     52.4           42.0               11.7 +/-    0.83      16.6 +/-    0.83  0.030 / 0.040
G27     132.7          11.5               17.4 +/-    2.86      47.0 +/-    2.86  0.030 / 0.050