PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/22-16:57:40
G01     47.1           23.1                6.1 +/-    1.22      12.5 +/-    1.22  0.030 / 0.060
G06     176.9          27.3                9.5 +/-    1.38      17.6 +/-    1.38  0.030 / 0.060
G11     43.9           12.6                5.9 +/-    1.59      15.5 +/-    1.59  0.190 / 0.280
G13     246.3          29.4                9.4 +/-    2.22      16.6 +/-    2.22  0.200 / 0.330
G15     280.3          15.2                9.4 +/-    1.76      23.2 +/-    1.76  0.100 / 0.160
G17     319.4          77.9                9.2 +/-    0.88       9.4 +/-    0.88  0.080 / 0.140
G19     251.7          63.4                9.2 +/-    0.54      10.2 +/-    0.54  0.030 / 0.030
G28     49.2           55.3                7.4 +/-    0.31       8.8 +/-    0.31  0.030 / 0.030
G30     150.3          35.9                9.4 +/-    1.04      14.7 +/-    1.04  0.040 / 0.040