PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/25-16:58:10
G01     43.0           19.1                8.0 +/-    0.96      17.9 +/-    0.96  0.120 / 0.460
G06     175.6          33.6               11.4 +/-    1.18      18.6 +/-    1.18  0.170 / 0.520
G13     240.6          25.6               11.4 +/-    2.06      21.9 +/-    2.06  0.050 / 0.070
G15     274.6          13.7                9.9 +/-    1.50      25.3 +/-    1.50  0.050 / 0.080
G17     343.3          75.0               10.4 +/-    0.43      10.8 +/-    0.43  0.060 / 0.180
G19     265.2          67.6               10.3 +/-    0.75      11.0 +/-    0.75  0.070 / 0.150
G24     317.7          15.2                8.6 +/-    1.61      21.2 +/-    1.61  0.030 / 0.040
G28     58.6           53.0                9.7 +/-    0.41      11.8 +/-    0.41  0.030 / 0.040
G30     152.5          30.0               10.5 +/-    0.69      18.4 +/-    0.69  0.040 / 0.040