PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/18-20:42:40
G03     191.8          26.9               14.5 +/-    1.59      27.2 +/-    1.59  0.080 / 0.250
G07     282.1          32.4               10.0 +/-    1.70      16.7 +/-    1.70  0.110 / 0.340
G08     149.1          20.4               16.4 +/-    1.49      35.8 +/-    1.49  0.040 / 0.060
G09     320.1          53.4               12.6 +/-    1.17      15.3 +/-    1.17  0.030 / 0.070
G16     46.3           47.3                9.5 +/-    0.60      12.5 +/-    0.60  0.110 / 0.250
G22     178.7          12.6               13.8 +/-    2.20      36.3 +/-    2.20  0.120 / 0.170
G23     67.0           82.6                8.8 +/-    0.84       8.9 +/-    0.84  0.050 / 0.120
G26     42.9           18.0                8.5 +/-    0.88      19.6 +/-    0.88  0.060 / 0.130
G27     107.7          29.9               12.7 +/-    1.64      22.3 +/-    1.64  0.080 / 0.100
G30     268.9          11.2                5.9 +/-   26.24      16.0 +/-   26.24  0.100 / 0.160