PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/21-04:27:50
G01     269.3          40.9                5.5 +/-    1.03       7.8 +/-    1.03  0.040 / 0.060
G03     315.8          28.7                3.4 +/-    2.25       6.2 +/-    2.25  0.040 / 0.060
G10     130.3          15.8                4.4 +/-    1.63      10.8 +/-    1.63  0.050 / 0.100
G11     248.3          19.5                6.5 +/-    1.35      14.4 +/-    1.35  0.050 / 0.080
G14     43.5           50.2                2.5 +/-    0.97       3.2 +/-    0.97  0.050 / 0.070
G18     232.6          38.3                6.8 +/-    0.98      10.2 +/-    0.98  0.050 / 0.070
G22     313.8          51.7                4.7 +/-    1.17       5.8 +/-    1.17  0.110 / 0.340
G25     50.7           15.8                2.0 +/-    1.16       5.0 +/-    1.16  0.100 / 0.320
G31     51.6           70.4                3.3 +/-    0.39       3.5 +/-    0.39  0.120 / 0.260
G32     66.2           30.2                2.8 +/-    0.64       4.9 +/-    0.64  0.120 / 0.230