PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-20:28:00
G03     191.4          26.2               16.2 +/-    1.74      30.9 +/-    1.74  0.040 / 0.070
G07     282.7          32.7               11.3 +/-    1.15      18.8 +/-    1.15  0.040 / 0.070
G08     148.9          20.8               18.8 +/-    1.50      40.6 +/-    1.50  0.110 / 0.170
G09     320.2          54.0               12.7 +/-    0.93      15.3 +/-    0.93  0.100 / 0.140
G16     45.9           46.6               10.3 +/-    0.38      13.6 +/-    0.38  0.060 / 0.100
G22     178.4          12.0               17.4 +/-    5.10      46.6 +/-    5.10  0.050 / 0.110
G23     73.4           82.4               10.2 +/-    1.15      10.3 +/-    1.15  0.090 / 0.280
G26     42.9           17.4                9.4 +/-    1.20      22.1 +/-    1.20  0.130 / 0.300
G27     107.1          30.2               13.0 +/-    1.04      22.6 +/-    1.04  0.030 / 0.030
G30     269.3          11.4               10.3 +/-    4.28      27.9 +/-    4.28  0.020 / 0.030