PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/28-21:28:00
G03     201.3          46.2               11.1 +/-    0.87      14.8 +/-    0.87  0.100 / 0.150
G07     265.7          21.7               10.4 +/-    2.23      21.9 +/-    2.23  0.120 / 0.120
G09     314.9          36.3                8.8 +/-    0.98      13.7 +/-    0.98  0.100 / 0.120
G16     70.8           62.9                9.0 +/-    0.42      10.0 +/-    0.42  0.140 / 0.140
G22     184.6          30.4               12.9 +/-    1.23      22.5 +/-    1.23  0.170 / 0.330
G23     343.3          70.0                8.0 +/-    0.49       8.5 +/-    0.49  0.100 / 0.300
G26     46.7           34.7                7.1 +/-    1.35      11.3 +/-    1.35  0.030 / 0.040
G27     124.8          18.3               12.5 +/-    1.61      28.7 +/-    1.61  0.040 / 0.040