PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/25-19:43:10
G03     197.0          40.3               10.0 +/-    1.91      14.4 +/-    1.91  0.030 / 0.040
G07     269.7          24.4               10.7 +/-    1.22      21.2 +/-    1.22  0.030 / 0.040
G09     316.7          40.4               11.1 +/-    0.94      16.1 +/-    0.94  0.050 / 0.170
G16     60.4           58.8               10.9 +/-    0.95      12.5 +/-    0.95  0.050 / 0.160
G22     182.4          24.9               11.1 +/-    1.60      21.7 +/-    1.60  0.070 / 0.130
G23     355.0          75.0               10.8 +/-    0.75      11.2 +/-    0.75  0.060 / 0.130
G26     44.8           29.7                8.4 +/-    1.22      14.8 +/-    1.22  0.030 / 0.040
G27     121.0          21.5               13.5 +/-    0.85      28.7 +/-    0.85  0.040 / 0.040