PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/27-20:58:00
G01     105.8          25.7               14.4 +/-    1.61      27.6 +/-    1.61  0.030 / 0.050
G07     111.1          52.3               14.8 +/-    0.70      18.1 +/-    0.70  0.030 / 0.040
G08     41.6           18.4                9.8 +/-    2.41      22.4 +/-    2.41  0.070 / 0.160
G09     175.2          13.9               17.4 +/-    1.37      44.3 +/-    1.37  0.090 / 0.160
G11     85.7           42.8               13.9 +/-    0.77      19.3 +/-    0.77  0.080 / 0.060
G13     308.6          29.9               12.9 +/-    0.70      22.7 +/-    0.70  0.050 / 0.050
G17     205.1          40.0               17.8 +/-    0.83      25.9 +/-    0.83  0.160 / 0.200
G18     76.5           23.6               11.9 +/-    1.67      24.0 +/-    1.67  0.220 / 0.240
G28     311.5          59.6               12.9 +/-    0.65      14.7 +/-    0.65  0.030 / 0.030
G30     31.6           78.7               14.4 +/-    0.94      14.6 +/-    0.94  0.030 / 0.030