PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/11-01:58:00
G07     15.4           68.3                3.3 +/-    0.64       3.5 +/-    0.64  0.050 / 0.060
G08     62.1           46.9                3.1 +/-    0.46       4.0 +/-    0.46  0.050 / 0.060
G09     174.8          45.3                5.5 +/-    2.02       7.4 +/-    2.02  0.120 / 0.130
G11     134.4          27.9                8.0 +/-    1.18      14.6 +/-    1.18  0.090 / 0.190
G23     160.4          20.4                6.6 +/-    1.43      14.4 +/-    1.43  0.100 / 0.200
G27     40.4           17.1                2.1 +/-    1.03       5.1 +/-    1.03  0.110 / 0.170
G28     253.1          37.4                4.5 +/-    1.18       6.9 +/-    1.18  0.040 / 0.030
G30     316.5          47.3                2.6 +/-    0.65       3.4 +/-    0.65  0.030 / 0.040